GB813657A - Cathodic protection system and anode therefor - Google Patents

Cathodic protection system and anode therefor

Info

Publication number
GB813657A
GB813657A GB4296/57A GB429657A GB813657A GB 813657 A GB813657 A GB 813657A GB 4296/57 A GB4296/57 A GB 4296/57A GB 429657 A GB429657 A GB 429657A GB 813657 A GB813657 A GB 813657A
Authority
GB
United Kingdom
Prior art keywords
per cent
cathodic protection
protection system
over
anode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4296/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB813657A publication Critical patent/GB813657A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
    • C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
    • C23F13/12—Electrodes characterised by the material
    • C23F13/14—Material for sacrificial anodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

A cathodic protection anode, suitable for the protection of ferrous pipes in earth, is made from an alloy having the following composition: Mn 0.50-1.3 per cent; Al not over 0.01 per cent; Sn not over 0.01 per cent; Pb not over 0.01 per cent; Fe 0.001-0.03 per cent; Ni not over 0.002 per cent; Mg at least 98.5 per cent. Up to 0.05 per cent of each of Cd, Cu, Ca, Si and Zn may be present. The amount of manganese is at least equal to 0.5+60 (per cent Al).
GB4296/57A 1956-02-29 1957-02-07 Cathodic protection system and anode therefor Expired GB813657A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US568619A US2805198A (en) 1956-02-29 1956-02-29 Cathodic protection system and anode therefor

Publications (1)

Publication Number Publication Date
GB813657A true GB813657A (en) 1959-05-21

Family

ID=24272028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4296/57A Expired GB813657A (en) 1956-02-29 1957-02-07 Cathodic protection system and anode therefor

Country Status (4)

Country Link
US (1) US2805198A (en)
DE (1) DE1256037B (en)
FR (1) FR1197655A (en)
GB (1) GB813657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137228A (en) * 1982-03-01 1984-10-03 Dow Chemical Co Underground backfill for magnesium anodes
CN101665944B (en) * 2008-09-05 2011-06-15 淄博宏泰防腐有限公司 Mg-Mn-Ca-Zn-Sr sacrificial anode with high current efficiency

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3258682A (en) * 1966-06-28 Electrode assembly
US2834698A (en) * 1957-06-17 1958-05-13 Dow Chemical Co Superior galvanic magnesium anode
US3549993A (en) * 1966-06-14 1970-12-22 Union Oil Co Corrosion rate measuring method by maintaining electrolytic contact and excluding any substantial oxygen contact with a test specimen
DE102019002409A1 (en) * 2019-04-02 2020-10-08 Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Reduction of the electric fields of a watercraft

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960700A (en) * 1930-01-10 1934-05-29 Dow Chemical Co Method of making magnesium alloys
US2431723A (en) * 1942-01-17 1947-12-02 Leland A Yerkes Electrolytic method for producing magnesium alloys
US2478479A (en) * 1947-02-03 1949-08-09 Dow Chemical Co Cored magnesium anode in galvanic protection
US2698230A (en) * 1950-02-21 1954-12-28 Magnesium Elektron Ltd Magnesium base alloys containing zirconium
US2645612A (en) * 1950-06-15 1953-07-14 American Smelting Refining Sacrificial anode
US2742355A (en) * 1952-02-29 1956-04-17 Magnesium Elektron Ltd Method of producing magnesium base alloys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137228A (en) * 1982-03-01 1984-10-03 Dow Chemical Co Underground backfill for magnesium anodes
CN101665944B (en) * 2008-09-05 2011-06-15 淄博宏泰防腐有限公司 Mg-Mn-Ca-Zn-Sr sacrificial anode with high current efficiency

Also Published As

Publication number Publication date
FR1197655A (en) 1959-12-02
US2805198A (en) 1957-09-03
DE1256037B (en) 1967-12-07

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